Results 31 to 40 of about 421,581 (294)
Analysis of plastic zones in surrounding rocks around a circular tunnel considering the effect of intermediate principal stress and heterogeneity [PDF]
MATEC Web of Conferences, 2019 Based on a modified Mohr-Coulomb criterion with a non-uniform coefficient, a calculation method of plastic zone boundary of surrounding rocks in a circular tunnel in non-uniform stress field is established.
Deng Shuxin +5 more
doaj +1 more source
Focal mechanisms in the southern Aegean from temporary seismic networks – implications for the regional stress field and ongoing deformation processes [PDF]
, 2014 The lateral variation of the stress field in the southern Aegean plate and the subducting Hellenic slab is determined from recordings of seismicity obtained with the CYCNET and EGELADOS networks in the years from 2002 to 2007.
A. Brüstle +5 more
core +1 more source
Petroleum, 2021 In this study, the Discrete Element Method (DEM) was employed to investigate numerically the effects of hydrate cementation and intermediate principal stress on the stress-dilatancy relation of grain-cementing type methane hydrate-bearing sediment (MHBS)
An Zhang, Mingjing Jiang, Wenhao Du
doaj +1 more source
Incremental response of a model granular material by stress probing with DEM simulations [PDF]
, 2009 International audienceWe use DEM simulations on a simple 2D model of a granular material to test for the applicability of elastoplasticity (yield criterion, flow rule) to the response to stress increments of arbitrary directions.
Froiio, Francesco, Roux, Jean-Noël
core +3 more sources
Macro deformation and micro structure of 3D granular assemblies subjected to rotation of principal stress axes [PDF]
, 2016 This paper presents a numerical investigation on the behavior of three dimensional granular materials during continuous rotation of principal stress axes using the discrete element method.
C Thornton +37 more
core +2 more sources
Influence of Intermediate Principal Stress on Plastic Flow
Transactions of the Japan Society of Mechanical Engineers, 1959 Let σ1, σ2 and σ3 (σ1>σ2>σ3) be the principal stresses, and σ3=0. Taking σ1 and σ2 as the axes, the criterion of plastic flow is not expressed by a smooth curve by the authors' theory, but a curve composed of two straight lines which intersect at σ1=4σ2 in the range between tension and pure shear. Experiments were carried out.
Fujio NAKANISHI, Yasuo SATO
openaire +3 more sources
Applied Sciences, 2018 Since the effect of intermediate principal stress on the strength of pavement materials is not entirely clear so far, a proprietary true triaxial apparatus was developed to simulate the spatial status of principal stresses to conduct compressive strength
Hong-xin Guan +4 more
doaj +1 more source
International Journal of Mining Science and Technology, 2021 Precisely understanding the dynamic mechanical properties and failure modes of rocks subjected to true triaxial stress state (σ1 > σ2 > σ3, where σ1, σ2, and σ3 are the major principal stress, intermediate principal stress, and minor principal stress ...
Wei You +4 more
doaj +1 more source
Stress concentrations around voids in three dimensions : The roots of failure [PDF]
, 2017 Funding This work forms part of a NERC New Investigator award for DH (NE/I001743/1), which is gratefully acknowledged. Acknowledgments The authors would like to acknowledge the reviewers, Elizabeth Ritz and Phillip Resor.
Bubeck, A. +3 more
core +1 more source
Journal of Rock Mechanics and Geotechnical Engineering, 2014 Simulations are conducted using five new artificial neural networks developed herein to demonstrate and investigate the behavior of rock material under polyaxial loading.
Rennie Kaunda
doaj +1 more source